Making an array with Strings and range of Integer merged

Question

I would like to make a function that generates an array consists of Strings, and integers in range combined as a whole String. For example:

let fruit = "apple"
let numbers = Array(1...10)
let format = ".jpg"

->

["apple1.jpg", "apple2.jpg", "apple3.jpg", ..... "apple10.jpg"]

How can I combine a defined String with range of integers and put them in an array? Apologize for a newbie question. Much appreciated. <3

Nirav D · Accepted Answer · 2018-08-29 06:17:49Z

3

The simplest solution is you can directly use map on your range.

let array = (1...10).map({ "apple\($0).jpg" })
print(array) //["apple1.jpg", "apple2.jpg", "apple3.jpg", ..... "apple10.jpg"]

answered Aug 29, 2018 at 6:17

Nirav D

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2 Comments

Gavin Over a year ago

Amazingly simple. Thanks Nirav D. But what if I need to use different names of fruit? I first wanted to define fruit as a separate variable, and then make something like this to make an array. Still learning.

Nirav D Over a year ago

@Gavin Simply change "apple\($0).jpg" with "\(fruit)\($0).jpg" now it will use value of fruit instead of static string apple

Rakesha Shastri · Accepted Answer · 2018-08-29 06:17:00Z

2

Use this:

func mergeStringAndInt(_ prefix: String, intArray: [Int], postfix: String) -> [String] {
    return intArray.map {String(format: "%@%d%@", prefix, $0, postfix )}
}

edited Aug 29, 2018 at 6:17

Rakesha Shastri

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answered Aug 29, 2018 at 6:13

Ali Moazenzadeh

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Comments

teja_D · Accepted Answer · 2018-08-29 06:23:41Z

1

You can do the like -

func resultArray() -> NSMutableArray {
var your_Array = NSMutableArray()
for item in numbers {
    let combinedStr = "\(fruit)\(item).\(format)"
    your_Array.add(combinedStr)
   }
    return your_Array
}

answered Aug 29, 2018 at 6:23

teja_D

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